Type I manhole for valve vault?

[Josh S.]

Hi all,
I am working on a project in a remote area with limited precast vendor options. Anyone see any problems with using a Type I manhole for a valve vault? Thinking of a 48" diameter vault to house a 24" BFV and air release valve.

 

[cvg]

not sure what a type 1 is, but 48 inch seems a bit small, unless it is for the operator and air valve only

 

[Josh S.]

Thanks cvg. I think you're probably right; may have to go with a 60" MH.

 

[dik]

"BFV"... Big Valve? <G>

 

[cvg]

I assume butterfly valve

 

[dik]

Same here... just jokin' been a slow day.

Dik

 

[cvg]

its a big, beautiful valve

#biggely

 

[msquared48]

You use Type 1's as catch basins for at grade inlets. They are less than 24" square.

Definitely not a Type 1.

Mike McCann, PE, SE (WA)

 

[bimr]

No problem with it.

 

[Josh S.]

Yes, butterfly valve, but I do like BeautiFul Valve.

As far as I know we call them Type I around here...